Trapped modes in particles with a negative refractive index

被引：0
|
作者：
Klimov, V. V. [1 ]
Bekirov, A. R. [2 ]
Luk'yanchuk, B. S. [2 ]
机构：
[1] Russian Acad Sci, PN Lebedev Phys Inst, 53 Leninsky Prospekt, Moscow 119991, Russia
[2] Lomonosov Moscow State Univ, Fac Phys, Moscow 119991, Russia
来源：
OPTICS LETTERS | 2023年 / 48卷 / 21期
基金：
俄罗斯科学基金会;
关键词：
BOUND-STATES; EMISSION;
D O I：
10.1364/OL.507583
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The natural oscillations of the electromagnetic field in a particle made from left-handed metamaterial, where both permittivity and permeability are negative, are considered. Based on the exact solution of the sourceless Maxwell equations, it is shown that due to the opposite directions of the phase and group velocities in the metamaterial, natural oscillations in such particles decay exponentially at infinity, that is, these natural oscillations can be considered as trapped modes with a finite energy. The manifestation of such modes in experiments with Bessel beams is also discussed. (c) 2023 Optica Publishing Group
引用
收藏
页码：5795 / 5798
页数：4
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